static void FixNonStringJson(StringBuilder invalidJson, int endIndex, int nonStringLength)
{
string newJson = invalidJson.ToString(endIndex, nonStringLength);
newJson = JsonFixers.FixNonStringJson(newJson);
ReplaceStringPart(invalidJson, endIndex, nonStringLength, newJson);
}
/// <summary>
/// 1. Escapes double quotes in json property values
/// 2. Replaces ":," with ":null,"
/// </summary>
public static string TryFix(string invalidJsonStr)
{
StringBuilder invalidJson = new(invalidJsonStr);
// Unify string start
invalidJson = invalidJson.Replace("\": \"", stringStart);
int lastStartIndex = notFound,
startIndex = invalidJson.IndexOf(stringStart);
// Fix non-string Json
if (startIndex != notFound)
{
string newJson = invalidJson.ToString(0, startIndex);
newJson = JsonFixers.FixNonStringJson(newJson);
ReplaceStringPart(invalidJson, 0, startIndex, newJson);
}
int endIndex = 0;
while (startIndex != notFound)
{
endIndex = stringEnd
.Select(end => invalidJson.IndexOf(end, startIndex + stringStart.Length + 1))
.Where(index => index != notFound)
.DefaultIfEmpty(notFound)
.Min();
if (endIndex == notFound)
{
break;
}
// Fix string
int innerStringStart = startIndex + stringStart.Length, innerStringLength = endIndex - innerStringStart;
string newString = invalidJson.ToString(innerStringStart, innerStringLength);
if (newString.IndexOf('\"') != notFound)
{
newString = FixJsonString(newString);
ReplaceStringPart(invalidJson, innerStringStart, innerStringLength, newString);
}
lastStartIndex = startIndex;
startIndex = invalidJson.IndexOf(stringStart, lastStartIndex + 1);
// Fix non-string Json
if (startIndex != notFound)
{
int nonStringLength = startIndex - endIndex;
FixNonStringJson(invalidJson, endIndex, nonStringLength);
startIndex = invalidJson.IndexOf(stringStart, lastStartIndex + 1);
}
}
if (endIndex < invalidJson.Length)
{
int nonStringLength = invalidJson.Length - endIndex;
FixNonStringJson(invalidJson, endIndex, nonStringLength);
}
return(invalidJson.ToString());
